Results 161 to 170 of about 705 (258)
ABSTRACT The rapid evolution of the Internet of Things (IoT) has significantly advanced the field of electrocardiogram (ECG) monitoring, enabling real‐time, remote, and patient‐centric cardiac care. This paper presents a comprehensive survey of AI assisted IoT‐based ECG monitoring systems, focusing on the integration of emerging technologies such as ...
Amrita Choudhury +2 more
wiley +1 more source
A Review of Solid-State LiDAR Principles and Metasurface-Based LiDAR Sensors. [PDF]
Demirbas E +6 more
europepmc +1 more source
We developed an animal model of early diabetic retinopathy (DR) in the tree shrew by feeding a high‐fat and high‐sugar diet in combination with STZ. Physiological and biochemical index detection, hematoxylin and eosin staining, and transmission electron microscopy were performed to examine DR.
Min Qiu +10 more
wiley +1 more source
Bluetooth Low Energy Dataset Using Separate-Channel Fingerprinting Techniques and Frequency Scanned Antennas. [PDF]
López-Pastor JA +4 more
europepmc +1 more source
ABSTRACT Ag–Fe bimetallic nanoparticles (alloy and core–shell structures) were synthesized using Grewia optiva leaf extract through a green, phytochemical‐mediated approach. The effects of pH, temperature, extract concentration, and Ag:Fe molar ratio on nanoparticle formation were systematically optimized, enabling size‐controlled and morphologically ...
Sehrish Asad +6 more
wiley +1 more source
A Computational Approach to Increasing the Antenna System's Sensitivity in a Doppler Radar Designed to Detect Human Vital Signs in the UHF-SHF Frequency Ranges. [PDF]
Vatamanu D, Miclaus S.
europepmc +1 more source
This paper proposes an integrated active light‐controlled frequency coding metasurface and a software‐defined array control system. Utilizing spatially encoded structured light and a “Decision‐Optimization‐Execution” intelligent closed‐loop architecture, the system overcomes traditional electrical control interference, achieves real‐time dynamic ...
Chao Zhao +7 more
wiley +1 more source
Beam-steering of a single-element nano-antenna with two transferring dielectric flat lenses. [PDF]
Helmy FE, Ibrahim II, Saleh AM.
europepmc +1 more source
Metalens‐Enabled Twisted Chromatic Dispersion
We successfully demonstrate visible broadband twisted dispersion metalenses. As a proof of concept, we realized two distinct devices: the conical helical and the spring‐like dispersion‐controlled metalenses. These results rigorously validate the universality of our approach in customizing arbitrary continuous 3D dispersion trajectories, thereby ...
Shiyu Zheng +3 more
wiley +1 more source
Terahertz's silent revolution in physics, engineering, and life science: Beyond the spectrum. [PDF]
Sun Y, Wang S, Gong Y.
europepmc +1 more source

